UK Grid Reference: ST535709
Latitude: 51°26'4"N
Longitude: 2°40'8"W
Iron in the form of hematite and earthy red ochre was mined at Providence Iron Mine, in a field known as the Iron Plantation. Yields varied from 600-3000 tons of ore per annum between 1858 and 1878. Mining continued here until the First World War. Reports from cave explorers in the 1950s refer to an enormous main rift (ST 5350 7093) leading to a partially choked adit entrance (ST 5370 7070) and further workings below.
Greg & Lettsom (1858) note under amethyst - "Gloucestershire: at Clifton; very fine, penetrated by lance-like crystals of hydrous oxide of iron .... also at Providence iron mine, one mile and a half S W of Clifton."
Note: Long Ashton was formerly in Bristol, which itself was formerly in Gloucestershire.
Mineral List
5 entries listed. 4 valid minerals.
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References
Greg R.P. & Lettsom W.G. (1858), Manual of the Mineralogy of Britain & Ireland, John Van Voorst, Paternoster Row, London
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